1. Levantamento de Reconhecimento dos Solos do Estado do Rio de Janeiro e Distrito Federal;Barros,1958
2. The red and yellow soils of the tropical and subtropical uplands;Bennema;Soil Sci.,1963
3. Report to the government of Brazil on classification of Brazilian soils;Bennema,1966
4. Fabric and Mineral Analysis of Soils;Brewer,1964
5. Some considerations on the major soils of the humid tropics of Brazil;Camargo,1962